.eslintrc

{
  // Configuration for JavaScript files
  "extends": ["airbnb-base", "plugin:prettier/recommended"],
  "rules": {
    "prettier/prettier": [
      "error",
      {
        "singleQuote": true,
        "endOfLine": "auto",
        "printWidth": 140
      }
    ]
  },
  "overrides": [
    // Configuration for TypeScript files
    {
      "files": ["**/*.ts", "**/*.tsx"],
      "plugins": ["@typescript-eslint", "unused-imports", "simple-import-sort"],
      "extends": ["airbnb-typescript/base", "plugin:prettier/recommended"],
      "parserOptions": {
        "project": "./tsconfig.json"
      },
      "rules": {
        "prettier/prettier": [
          "error",
          {
            "singleQuote": true,
            "endOfLine": "auto",
            "printWidth": 140
          }
        ],
        "import/extensions": [
          "error",
          "ignorePackages",
          {
            "js": "never",
            "jsx": "never",
            "ts": "never",
            "tsx": "never",
            "": "never"
          }
        ], // Avoid missing file extension errors when using '@/' alias
        "@typescript-eslint/comma-dangle": "off", // Avoid conflict rule between Eslint and Prettier
        "@typescript-eslint/consistent-type-imports": "error", // Ensure `import type` is used when it's necessary
        "import/prefer-default-export": "off", // Named export is easier to refactor automatically
        "simple-import-sort/imports": "error", // Import configuration for `eslint-plugin-simple-import-sort`
        "simple-import-sort/exports": "error", // Export configuration for `eslint-plugin-simple-import-sort`
        "@typescript-eslint/no-unused-vars": "off",
        "unused-imports/no-unused-imports": "error",
        "unused-imports/no-unused-vars": [
          "error",
          { "argsIgnorePattern": "^_" }
        ]
      }
    },
    // Configuration for testing
    {
      "files": ["**/*.test.ts"],
      "plugins": ["jest", "jest-formatting"],
      "extends": [
        "plugin:jest/recommended",
        "plugin:jest-formatting/recommended"
      ],
      "rules": {
        "jest/no-mocks-import": "off"
      }
    }
  ]
}